Update to typeahead.js v0.10.5

Obsoletes PR #12, #13.

This version sends less sear queries than v0.10.2. The old version often sends outdated queries, eg. AJAX request for search Abc is still outstanding while result for Abcd has already been received. This was changed in 0.10.3 but broke searches with multiple remote sources, but was fixed in 0.10.4.
0.10.5 only relaxes the jQuery version constraint.

I have tested this gem with search across multiple simultaneos remote sources and prefetch and found no problems.